public class futureTest{
    @future
    public static void futureMethod(Set<Id> accIds){
        System.debug('*************Enter Future Method***********');
        Account[] accounts = [Select Id, TriggerField__c from Account where Id in: accIds];
        for(Integer i=0; i<accounts.size(); i++){
            accounts[i].TriggerField__c = null;
        }
        update accounts;
    }
}